public class CalcDemo04 {
    public static void main(String[] args) {

        int i = 1;
        i += 1; //相当于i=i+1
        System.out.println(i);
        i -= 1; // 相当于i = i-1
        System.out.println(i);
        i *= 1;//相当于i = i*1
        System.out.println(i);
        i /= 1;//相当于i = i/1
        System.out.println(i);
        i %= 1;// 相当于 i = i %1
        System.out.println(i);

        byte b = 1;
        b+=1;//本质b = (byte)(b+1)
//        b =b+1;


    }
}
